Exemplary Report: 5 pts.
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An exemplary report will have the following
characteristics
- All crosses are diagramed both
phenotypically and genotypically with clear
symbols that reflect the hypothesized
inheritance pattern.
- After each cross the results are analyzed
and there is a clear statement of the students
current hypothesis.
- Predictions based on the hypothesis are made
for the each cross before doing the cross
and the crosses chosen are appropriate for
testing the current hypothesis.
- Hypotheses are tested statistically using
the chi-square test in an appropriate manner
- Chi-square results are understood and are
correctly interpreted
- Student rejects all hypotheses not supported
by the evidence and proposes new hypotheses.
- Crosses involving both traits
simultaneously are used and the student shows an
understanding of independent assortment by
correctly predicting the results if independent
assortment is true
- If independent assortment does not hold
student can propose and test other
hypotheses
- There is a conclusion that correctly
explains the inheritance pattern for the traits,
with supporting evidence, or a conclusion that
clearly describes why all reasonable hypotheses
can not explain the results, with supporting
evidence.
- If all known hypotheses are inadequate,
student shows some creativity in coming up with
at least one alternative hypotheses to test.
- The report shows a clear understanding of
the genetics covered up to this point in class
that is applicable to this problem, is neat and
well organized, with no superfluous or
unexplained crosses.
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Satisfactory Report: 4 pts.
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A satisfactory report will have the following
characteristics
- All crosses are diagramed both
phenotypically and genotypically with clear
symbols that reflect the hypothesized
inheritance pattern.
- After each cross the results are analyzed
and there is a clear statement of the students
current hypothesis.
- Predictions based on the hypothesis are made
for the each cross before doing the cross
and the crosses chosen are appropriate for
testing the current hypothesis.
- Hypotheses are tested statistically using
the chi-square test in an appropriate manner
- Chi-square results are understood and are
correctly interpreted
- Student rejects all hypotheses not supported
by the evidence and proposes new hypotheses.
- Crosses involving both traits
simultaneously are used and the student shows an
understanding of independent assortment by
correctly predicting the results if independent
assortment is true
- There is a conclusion that correctly
explains the inheritance pattern for the trait,
with supporting evidence, or a conclusion that
clearly describes why all reasonable hypotheses
can not explain the results, with supporting
evidence.
- The report is not always clearly written and
has inappropriate crosses or crosses that are
not well explained, but does include the
appropriate crosses and does explain what is
going on.
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Serious Flaws But Nearly Satisfactory: 3
pts.
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A nearly satisfactory report will have the
following characteristics
- All crosses are diagramed both
phenotypically and genotypically with clear
symbols that reflect the hypothesized
inheritance pattern.
- Does not always have predictions for what
will happen in a cross and does not discuss the
results from all crosses.
- Has at least tested the most likely
hypotheses and shows a basic knowledge of the
appropriate genetics.
- Hypotheses are tested statistically using
the chi-square test but the test may not always
be applied correctly
- Crosses involving both traits
simultaneously are used and the student shows an
understanding of independent assortment by
correctly predicting the results if independent
assortment is true
- Has a conclusion with supporting evidence
and has clearly tried to solve the problem, but
may not have a complete solution.
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Begins, But Fails to complete Problem: 2
pts.
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An incomplete report will have the following
characteristics
- All crosses are diagramed both
phenotypically and genotypically with clear
symbols that reflect the hypothesized
inheritance pattern.
- Can not make reasonable predictions of the
results of a cross, especially when more than
one trait is involved, and can not always
tell whether a cross supports or refutes a
hypotheses but does know what some of the
hypotheses should be.
- Attempts to do the chi-square but clearly
does not understand how to properly use or
interpret the chi-square test
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Unable to Begin Effectively: 1 pt.
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A poor report will have the following
characteristics
- Can not properly distinguish between
phenotype and genotype
- Can not diagram cross or make reasonable
predictions based on a Mendelian hypothesis.
- Can not set up chi-square
- Does not understand independent
assortment
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No Attempt: 0 pts.
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